polyglot/palette: Canvas as a frontend for polyglot

eq 38aafeacb5 No longer require to be in views/ to render templates		7 lat temu
..
img_preview.mustache	110d359a23 Rename templates to .mustache	7 lat temu
lock_explanation.mustache	38aafeacb5 No longer require to be in views/ to render templates	7 lat temu
media_preview.mustache	38aafeacb5 No longer require to be in views/ to render templates	7 lat temu
no_preview.mustache	38aafeacb5 No longer require to be in views/ to render templates	7 lat temu